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What are the similarities and differences between photophosphorylation and oxidative phosphorylation?

Both processes operate on the same basic principle; passing electrons down a chain in order to create a proton (H + ) gradient , allowing the formation of ATP . The biggest difference is where they occur. Ph...
GM
Answered by Gloria M. • Biology tutor
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Explain the causes and consequences of sickle cell anaemia (5)

Sickle cell anaemia is caused by a point mutation, exchanging adenine for thymine in the DNA codon CTC. This causes a change in the mRNA to GUG, which results in a change in the polypeptide sequence during p...
AS
Answered by Anna S. • Biology tutor
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Explain the process of semi-conservative DNA replication.

The enzyme DNA helicase breaks the hydrogen bonds between the two polynucloetide DNA strands causing the double helix to unzip, forming two single strands. Each original single strand then acts as a template...
BJ
Answered by Bardwell J. • Biology tutor
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What is a condensation reaction?

A condensation reaction is the formation of a chemical bond between two molecules with the elimination of a water molecule. You can tell this reaction has occurred when you see an equation written down as a ...
RN
Answered by Rebecca N. • Biology tutor
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What are the four stages of aerobic respiration in humans?

Glycolysis which is where glucose is broken down into 2 molecules of pyruvate releasing 2ATP and 2NADH. Second is the link reaction. This links glycolysis to the Krebs Cycle. Pyruvate molecules are decarboxy...
TK
Answered by Taqua K. • Biology tutor
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